Comment by vlovich123

The low level abstraction was buggy because they forgot to free memory because they confused types, not because of mmap.

Thats completely orthogonal to the question and less likely in Rust because you would generally use an enum with Drop implemented for the interior of the variants to guarantee correct release.

And mmap is no more difficult to call in Rust nor more magically unsafe - that’s the FUD. The vast majority of Ghostty wouldn’t even need unsafe meaning the vast majority of code gets optimized more due to no aliasing being automatic everywhere and why the argument that “zig is safer than unsafe rust” is disingenuous about performance or safety of the overall program.